If there is one thing I have learned from watching Antiques Roadshow, it is that you should never try to clean any object that might be old and valuable. In doing so, you may destroy much of the item’s value. The same rule applies to antique guns, guitars, and more recently, automobiles.
Not too long ago, people restored old cars to a factory-new finish in order to make them valuable. Now, the emphasis is shifting towards leaving the car “as-is” and showing its age. People really dig the “patina” look but personally, I never really understood why.
Then I saw this ’77 Corolla, and I think I am starting to understand.